Benjamin Sam, Charly El-Khoury 3/18/2015 AD-FRQCVT1 Low Frequency Adapter for FMCOMM3 Initial Evaluation Results Benjamin Sam, Charly El-Khoury 3/18/2015

AD-FRQCVT1 Standalone Rx Conversion Gain

Standalone Rx P1dB

Standalone Tx Output Spectrum Tx frequency set to 70 MHz Fin=370 MHz, Pin=-15 dBm Found Reference Spurs at +/-730 kHz

System Evaluation: Tx Output Output Level: adjustable with TX Ch2 Attenuation FTX = 25 MHz 0 dB Attn => Po = +8.1 dBm 80 dB Attn => Po = -73 dBm Pout is flat to 1 dB from 20-100 MHz, but peaks up by 6 dB at 2 MHz, due to FRQCVT1 gain flatness Rx setting changed from 1-100 MHz, no additional spur observed (<-85 dBm) Rx input varied from 1-100 MHz, no additional spur observed

System Evaluation: Tx Output Output frequency is low by 1 MHz, with two spurs Set to 25 MHz, got 24, 25 & 26 MHz 2nd harmonics is 50 dB down Came from AD9361 Tx Output, with Fo modulated by DDS If DDS is turned off, only LO feedthrough remains (-50 dBm) at output of AD9361 FRQCVT1 output 25 MHz AD9361 TX2 output 370 MHz